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Article: Multilayered solar interface dynamos: From a Cartesian kinematic dynamo to a spherical dynamic dynamo

TitleMultilayered solar interface dynamos: From a Cartesian kinematic dynamo to a spherical dynamic dynamo
Authors
KeywordsDynamics
Interface dynamos
Solar magnetic fields
Issue Date2007
PublisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAU
Citation
Proceedings Of The International Astronomical Union, 2007, v. 3 S247, p. 22-32 How to Cite?
AbstractThe existence of the solar tachocline, a thin differentially rotating layer at the base of the convection zone which is inferred from helioseismology, leads to the concept of an interface dynamo. The tachocline is magnetically coupled to the radiative interior and the overlying convection zone. A multilayered interface dynamo is required to describe the dynamo process involved. We first discuss a two-dimensional multilayered interface dynamo model in cartesian geometry consisting of four horizontal layers with different magnetic diffusivities magnetically coupled by the three sets of interface matching conditions for the generated magnetic field. Exact solutions of the coupled dynamo system are obtained in this model. We then discuss a fully three-dimensional and multi-layered spherical dynamic interface dynamo using a finite element method based on the three-dimensional tetrahedralization of the whole spherical system. The spherical dynamic interface dynamo also consists of four magnetically coupled zones. In the convection zone, the fully three-dimensional dynamic feedback of Lorentz forces is taken into account. It is shown that the dynamo is characterized by a strong toroidal magnetic field, selects dipolar symmetry and propagates equatorward. © 2008 International Astronomical Union.
Persistent Identifierhttp://hdl.handle.net/10722/75297
ISSN
2015 SCImago Journal Rankings: 0.105
References

 

DC FieldValueLanguage
dc.contributor.authorChan, KHen_HK
dc.contributor.authorLiao, Xen_HK
dc.contributor.authorZhang, Ken_HK
dc.date.accessioned2010-09-06T07:09:48Z-
dc.date.available2010-09-06T07:09:48Z-
dc.date.issued2007en_HK
dc.identifier.citationProceedings Of The International Astronomical Union, 2007, v. 3 S247, p. 22-32en_HK
dc.identifier.issn1743-9213en_HK
dc.identifier.urihttp://hdl.handle.net/10722/75297-
dc.description.abstractThe existence of the solar tachocline, a thin differentially rotating layer at the base of the convection zone which is inferred from helioseismology, leads to the concept of an interface dynamo. The tachocline is magnetically coupled to the radiative interior and the overlying convection zone. A multilayered interface dynamo is required to describe the dynamo process involved. We first discuss a two-dimensional multilayered interface dynamo model in cartesian geometry consisting of four horizontal layers with different magnetic diffusivities magnetically coupled by the three sets of interface matching conditions for the generated magnetic field. Exact solutions of the coupled dynamo system are obtained in this model. We then discuss a fully three-dimensional and multi-layered spherical dynamic interface dynamo using a finite element method based on the three-dimensional tetrahedralization of the whole spherical system. The spherical dynamic interface dynamo also consists of four magnetically coupled zones. In the convection zone, the fully three-dimensional dynamic feedback of Lorentz forces is taken into account. It is shown that the dynamo is characterized by a strong toroidal magnetic field, selects dipolar symmetry and propagates equatorward. © 2008 International Astronomical Union.en_HK
dc.languageengen_HK
dc.publisherCambridge University Press. The Journal's web site is located at http://journals.cambridge.org/action/displayJournal?jid=IAUen_HK
dc.relation.ispartofProceedings of the International Astronomical Unionen_HK
dc.rightsProceedings of the International Astronomical Union. Copyright © Cambridge University Press.en_HK
dc.subjectDynamicsen_HK
dc.subjectInterface dynamosen_HK
dc.subjectSolar magnetic fieldsen_HK
dc.titleMultilayered solar interface dynamos: From a Cartesian kinematic dynamo to a spherical dynamic dynamoen_HK
dc.typeArticleen_HK
dc.identifier.emailChan, KH:mkhchan@hku.hken_HK
dc.identifier.authorityChan, KH=rp00664en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1017/S1743921308014610en_HK
dc.identifier.scopuseid_2-s2.0-43049098529en_HK
dc.identifier.hkuros154844en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-43049098529&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume3en_HK
dc.identifier.issueS247en_HK
dc.identifier.spage22en_HK
dc.identifier.epage32en_HK
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridChan, KH=7406033542en_HK
dc.identifier.scopusauthoridLiao, X=7202134147en_HK
dc.identifier.scopusauthoridZhang, K=7404451892en_HK

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